TY - GEN
T1 - Oscillation controlled magnetic sensing by uing spinelectronics device
AU - Kaiju, Hideo
AU - Shiikj, Kazuo
PY - 2005
Y1 - 2005
N2 - Oscillation controlled magnetic sensing by using magneto-resistance devices is proposed. An InSb magnetic sensing device was used in the feedback loop of a Hartley oscillator. The oscillation starts when the resistance of the InSb magnetic sensing device changes in the external magnetic field as the oscillation condition is satisfied. Output response and error rate in our magnetic sensing for the detection of oscillation were investigated. As a result a high output response and low noise were obtained. The resistance change dependence of the output voltage is in good agreement with calculation results obtained from F-matrix method. Noise originated from the output in the sensing circuit can be explained from the thermal noise and shot noise of total output impedance. Based on these analyses, S/N ratio of the oscillation controlled magnetic sensing is found to be higher than those of conventional methods. Furthermore, error rate less than 10-7 is found to be obtained, and it can be explained from calculated results of normal distribution taking the crest value of total noise, summarized thermal noise and shot noise, and threshold voltage into account. Therefore, this magnetic sensing method has potential application in highly sensitive magnetic sensors.
AB - Oscillation controlled magnetic sensing by using magneto-resistance devices is proposed. An InSb magnetic sensing device was used in the feedback loop of a Hartley oscillator. The oscillation starts when the resistance of the InSb magnetic sensing device changes in the external magnetic field as the oscillation condition is satisfied. Output response and error rate in our magnetic sensing for the detection of oscillation were investigated. As a result a high output response and low noise were obtained. The resistance change dependence of the output voltage is in good agreement with calculation results obtained from F-matrix method. Noise originated from the output in the sensing circuit can be explained from the thermal noise and shot noise of total output impedance. Based on these analyses, S/N ratio of the oscillation controlled magnetic sensing is found to be higher than those of conventional methods. Furthermore, error rate less than 10-7 is found to be obtained, and it can be explained from calculated results of normal distribution taking the crest value of total noise, summarized thermal noise and shot noise, and threshold voltage into account. Therefore, this magnetic sensing method has potential application in highly sensitive magnetic sensors.
KW - Feedback Loop
KW - Hartley Oscillation
KW - Magnetic Sensing
KW - Magnetoresisitance Device
KW - Spinelectronics
UR - http://www.scopus.com/inward/record.url?scp=33747887039&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33747887039&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:33747887039
SN - 9806560477
SN - 9789806560475
T3 - 3rd International Conference on Computing, Communications and Control Technologies, CCCT 2005, Proceedings
SP - 31
EP - 34
BT - 3rd International Conference on Computing, Communications and Control Technologies, CCCT 2005, Proceedings
PB - International Institute of Informatics and Systemics, IIIS
T2 - 3rd International Conference on Computing, Communications and Control Technologies, CCCT 2005
Y2 - 24 July 2005 through 27 July 2005
ER -